This fact sheet answers the most frequently asked health questions (FAQs) about perchlorates. For more information, call the ATSDR Information Center at 1-800-232-4636. This fact sheet is one in a series of summaries about hazardous substances and their health effects.erchlorates are colorless salts that have no odor. There are five perchlorate salts that are manufactured in large amounts: magnesium perchlorate, potassium perchlorate, ammonium perchlorate, sodium perchlorate, and lithium perchlorate. Perchlorate salts are solids that dissolve easily in water.
Instructions. 1  1. First of all, start with few and easy sign languages. Introducing too many signs at one time will be a useless effort. 2  2. Introduce the signs to your children in such a way as âyou say the word.â It helps in associating the word with the sign language.
When can I start teaching my baby sign language? The best time to start is when your baby begins to develop a real desire to communicate. Some babies can learn simple signs as young as 6 months. But your baby may not have the hand control to be able to sign back to you until she's 8 or 9 months old. You can start teaching signs to your baby when you think she's ready â even if she can't sign back yet.